Schneider Electric 890USE19600 Version 1.0 manual contains the NIM status

Fieldbus Communications Support

Input and Output The application of the INTERBUS bit packing rules to the sample island assembly

Data Exchange results in four words of output data and five words of input data. The tables that follow show how digital data is bit packed for optimization, and how data, status, and echo output data (from outputs) appear in the PLC as the same data type (digital input data). In these tables, N refers to the island node number. That is, N1 represents the first addressable node (module) on the sample island bus, N2 the second, and so forth.

Output Data			The following table shows how the four words in the sample island assembly output
Exchange			data process image are organized after applying the bit packing rules:
	Bit Number
Word	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
1	NIM control word
2	empty (set to 0)				N6 output data						N4 output data				N2 output
															data
3	N8 (channel 1) analog output data
4	N8 (channel 2) analog output data

Input Data				The following table shows how the five words of the sample island assembly output
Exchange				data process image are organized after applying the bit packing rules. The first word
				contains the NIM status.
	Bit Number
Word	15	14	13		12	11	10	9	8	7	6	5	4	3	2	1	0
1	NIM status
2	empty (set to 0)					N3 input data				N2 output		N2 output		N1 input		N1 input
										status		echo		status		data
3	empty (set to 0)											N5 input data
4	N7 (channel 1) analog input data
5	N7 (channel 2) analog input data

40 890USE19600 April 2004